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symbol ticker(esp. short ones)are recycled

Symbol ticker is typically 1 to 4 chars, though numbers are often used in Asia such as HKSE. We can call it

symbol

stock symbol

ticker symbol

symbol ticker

Symbols are sometimes reused. In the US the single-letter symbols are particularly sought after as vanity symbols. For example, since Mar 2008 Visa Inc. has used the symbol V that had previously been used by Vivendi which had delisted